Innovative moisture/icing-resistant flush air data system

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Proceedings title28th Congress of the International Council of the Aeronautical Sciences 2012 (ICAS 2012)
Conference28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012, September 23-28, 2012, Brisbane, Australia
Pages36693678; # of pages: 10
SubjectAir data; Bombardier aerospaces; Calibration coefficients; Flush air data systems; Moisture condensation; National Research Council of Canada; Performance requirements; Simultaneous calibration; Angle of attack; Angle of attack indicators; Calibration; Meteorology; Moisture; Research laboratories; Aircraft
AbstractBombardier Aerospace contracted the Flight Research Laboratory of the National Research Council of Canada (NRC) to develop a Flush Air Data System (FADS) capable of operation following transit through adverse weather conditions for use on Bombardier's test aircraft. The NRC's existing FADS design was modified to incorporate water traps at the inlet of each of the four pressure ports to prevent moisture ingestion into the pressure lines. A heating system was designed to reduce moisture condensation in the pressure lines. After fabrication of the final prototype was completed, experimental bench tests were performed to demonstrate that the FADS had met the performance requirements for flight through adverse conditions and that the system was safe for flight. The FADS was then sent to Bombardier Flight Test Centre and installed on a Bombardier Global 5000 aircraft for flight testing. To evaluate the FADS performance, manoeuvres were performed where the FADS was exposed to adverse weather conditions; the FADS angle of attack and angle of sideslip measurements were unaffected by these conditions during the tests. The FADS was calibrated using NRC's GPS-based Simultaneous Calibration of Air Data Systems (SCADS) technique by developing angle of attack and angle of sideslip calibration coefficients. The calibration coefficients were then validated across the aircraft's flight envelope and weather requirements. From the results of the bench tests and flight tests, it was concluded that the new FADS was able to measure angles of attack and sideslip after flight through adverse weather conditions accurately. © NRC Canada 2012.
Publication date
PublisherCurran Associates, Inc.
AffiliationAerospace; National Research Council Canada
Peer reviewedYes
NPARC number21270000
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Record identifierc2462e31-0544-448c-b13b-c3ee615fe1af
Record created2013-12-13
Record modified2016-05-09
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